Shooting my two year old G19 yesterday and got hit in the face with at least three spent casings per mag. Ammo +P+ 124 Grain Hydrashok and Winchester FMJ NATO. I think this was 124 gr also. Last time I shot it I thought it was doing it only with older mags. Yesterday I was using one of the ambi cut mags that came w it. When I finished shooting I had a 1 inch stripe of blood dried on my forehead. I didn't realize I was cut. Anyone have the numbers of the parts I need to fix this?